>From a quick look.
It seems that it is 'pwmchip%d' for a long time.
https://elixir.bootlin.com/linux/v4.0/source/drivers/pwm/sysfs.c#L314
Erez
-----Original Message-----
From: Richard Cochran <richardcoch...@gmail.com>
Sent: Saturday, 16 May 2020 21:15
To: Lokesh Vutla <lokeshvu...@ti.com>
Cc: Sekhar Nori <nsek...@ti.com>; linuxptp-devel@lists.sourceforge.net;
e-ru...@ti.com
Subject: Re: [Linuxptp-devel] [RFC PATCH v2 2/3] pwm: Add helper apis to
control pwm
On Sat, May 16, 2020 at 11:53:57PM +0530, Lokesh Vutla wrote:
> +#define PWM_CHAN_EXPORT "/sys/class/pwm/pwmchip%d/export"
> +#define PWM_CHAN_ENABLE "/sys/class/pwm/pwmchip%d/pwm%d/enable"
> +#define PWM_CHAN_PERIOD "/sys/class/pwm/pwmchip%d/pwm%d/period"
Hm, this is strange. I have been using pwm via sysfs on kernel 4.19, and there
the paths are like this:
/sys/class/pwm/pwm%d/enable
What happened to sysfs? Did the ABI change?
Looks like there will be more work needed here, in order to deal with the (at
least) two different ABIs.
:(
Richard
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